Supersonic monkeys, vampires, talking fishmen, and all sorts of different supernatural monsters living alongside humans—this has been part of daily life in Hellsalem's Lot, formerly known as New York City, for some time now. When a gateway between Earth and the Beyond opened three years ago, New Yorkers and creatures from the other dimension alike were trapped in an impenetrable bubble and were forced to live together. Libra is a secret organization composed of eccentrics and superhumans, tasked with keeping order in the city and making sure that chaos doesn't spread to the rest of the world. Pursuing photography as a hobby, Leonardo Watch is living a normal life with his parents and sister. But when he obtains the "All-seeing Eyes of the Gods" at the expense of his sister's eyesight, he goes to Hellsalem's Lot in order to help her by finding answers about the mysterious powers he received. He soon runs into Libra, and when Leo unexpectedly joins their ranks, he gets more than what he bargained for. Kekkai Sensen follows Leo's misadventures in the strangest place on Earth with his equally strange comrades—as the ordinary boy unwittingly sees his life take a turn for the extraordinary.

Hidden in plain sight, spirits known as youkai inhabit the world. While most are benign, a certain subset threatens the tenuous peace between youkai and humanity. Ever since she agreed to become their "God of Wisdom," Kotoko Iwanaga has served as a mediator between the two realms, resolving any supernatural problems that come her way. At a local hospital, Kotoko approaches Kurou Sakuragawa, a university student whose long-term relationship ended with an unfortunate breakup. Kotoko harbors feelings for him and suspects that something supernatural lurks within his harmless appearance, so she asks Kurou for his assistance in helping out youkai. Two years later, news of an idol who was accidentally crushed to death by steel beams flooded the press. However, months later, sightings begin to tell of a faceless woman who wields a steel beam. As is the case for any supernatural problem, Kotoko and her partner set out to stop this spirit from wreaking havoc—but this case may prove to be far more sinister and personal than they could have ever thought. [Written by MAL Rewrite]

Thanks to Souma Yukihira, Erina Nakiri, and the rebel forces overthrowing the regime of Azami Nakiri—the previous school director—and the former Elite Ten, Tootsuki Culinary Academy is back in order. However, its students have one more great battle ahead of them: the BLUE, a competition where young chefs seeking world-class fame compete. Faced with new trials and rivals, Souma and his friends will fight to conquer the BLUE and to defeat Asahi Saiba, the leader of an underworld organization of chefs known as Noir, who once defeated Souma and his father in a Shokugeki. [Written by MAL Rewrite]

At Academy Island, everything is settled through "Games" waged for a certain number of stars, with the strongest student being granted the ranking of Seven Stars. Hiroto, a transfer student, unexpectedly beats the strongest empress and becomes the pseudo-strongest in the school! A mind game of lies and bluffs begins!